Re: [RE-wrenches] Transformerless inverter reliability

2012-04-16 Thread Martin E. Herzfeld
NEC 110.3(B) Installation and Use. "Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling." (1) "5.2 Selecting the mounting location" Page 19: "• Do not expose the Sunny Boy to direct sunlight

[RE-wrenches] Transformerless inverter reliability

2012-04-16 Thread Joel Davidson
Wrenches, Los Angeles Department of Water & Power (LADWP), the largest and most influential municipal utility in the US is finally going to allow transformerless inverters for residential PV systems. Are there any design, installation or reliability issues to consider with the SMA and other hi